The melody of C-H-R-I-S-T-M-A-S by Eddy Arnold runs 245 notes across 45 bars, 2:21 long in C at 170 beats per minute. The tab sits almost entirely in the first two frets, one note at a time — no chords to barre and no strumming pattern to keep up with. A piano backing track plays the chords and bass underneath, so the line you are learning sounds like the record even at half speed.
Prefer to strum and sing it instead? C-H-R-I-S-T-M-A-S chords and lyrics.